package com.smdk.dsminio;


import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpResponseEncoder;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.handler.stream.ChunkedWriteHandler;

/**
 * httpserver
 * 提供文件访问
 * @author Bashful Huang
 * @since 2020-03-27
 **/

public class HttpServer {
    public void start(int port) throws Exception {
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup).handler(new LoggingHandler(LogLevel.DEBUG)).channel(NioServerSocketChannel.class)
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        public void initChannel(SocketChannel ch){
                            ch.pipeline().addLast("http-decoder", new HttpRequestDecoder());
                            ch.pipeline().addLast("http-aggregator", new HttpObjectAggregator(65555));
                            ch.pipeline().addLast("http-encoder", new HttpResponseEncoder());
                            ch.pipeline().addLast("http-chunked", new ChunkedWriteHandler());
                            ch.pipeline().addLast(new HttpStaticFileServerHandler());
                        }
                    }).option(ChannelOption.SO_BACKLOG, 128);
            ChannelFuture f = b.bind(port).sync();
            f.channel().closeFuture().sync();
        } finally {
            workerGroup.shutdownGracefully();
            bossGroup.shutdownGracefully();
        }
    }

    public static void main(String[] args) throws Exception {
        HttpServer server = new HttpServer();
        server.start(9011);
    }
}